The paper length is not relevant since the chart flows from one page to the next.
Mobile
in.
mm
Portrait
2.75
70
For smart phones, not for printing
Landscape
5.5
140
For smart phones, not for printing
USA & Canada
in.
mm
Letter Portrait
8.5
216
Also Legal Portrait
Letter Landscape
11
279
Legal Landscape
14
356
Also Ledger Portrait
Ledger Landscape
17
432
International
in.
mm
A5 Portrait
5.82
148
A4 Portrait
8.25
210
Also A5 Landscape
A4 Landscape
11.71
297
Also A3 Landscape
A3 Landscape
16.54
420
The Text+ programs assume that the right and left margins are each about 25mm (1/2 inch) wide.
On the Format for Printing page, differences in page margins can be accommodated by the "fudge factor":
Nina Jane Farmer
(26 Mar 1863 Bledsoe County, Tennessee, USA - 3 Sep 1934 Pikeville, Bledsoe County, Tennessee, USA)
John W Greer
(27 Sep 1856 Bledsoe County, Tennessee, USA - 23 Mar 1936 Pikeville, Bledsoe County, Tennessee, USA)
         ├─Mahala Greer
(Bledsoe County, Tennessee, USA;16 Apr 1887 - 7 Jan 1952)
         ├─William W Greer
(28 Jul 1890 Bledsoe County, Tennessee, USA - 30 Oct 1942 Pikeville, Bledsoe County, Tennessee, USA)
         ├─John Joseph Greer, M.D.
(10 Dec 1892 Bledsoe County, Tennessee, USA - 12 Jan 1936 Knoxville, Knox County, Tennessee, USA)
         ├─Leonard Greer
(11 May 1894 Bledsoe County, Tennessee, USA - Dec 1977 Pikeville, Bledsoe County, Tennessee, USA)
         └─Audley Greer
(Abt 1899 Bledsoe County, Tennessee, USA - ??)